[PATCH v3 0/3] riscv: fix timer update hazards on RV32

[Paul Walmsley]

On Sun, 4 Jan 2026, Naohiko Shimizu wrote:

> This patch series fixes timer register update hazards on RV32 for
> clocksource, KVM, and suspend/resume paths by adopting the 3-step
> update sequence recommended by the RISC-V Privileged Specification.
> 
> Changes in v3:
> - Dropped redundant subject line from commit descriptions.
> - Added Fixes tags for all patches.
> - Moved Signed-off-by tags to the end of commit messages.
> 
> Changes in v2:
> - Added detailed architectural background to commit messages.
> - Added KVM and suspend/resume cases.
> 
> Naohiko Shimizu (3):
>   riscv: clocksource: Fix stimecmp update hazard on RV32
>   riscv: kvm: Fix vstimecmp update hazard on RV32
>   riscv: suspend: Fix stimecmp update hazard on RV32
> 
>  arch/riscv/kernel/suspend.c       | 3 ++-
>  arch/riscv/kvm/vcpu_timer.c       | 6 ++++--
>  drivers/clocksource/timer-riscv.c | 3 ++-
>  3 files changed, 8 insertions(+), 4 deletions(-)

Thanks, queued for v6.19-rc. 


- Paul